The Patent Finder
US

Method and System of Extending Battery Life of a Wireless Microphone Unit

US 8,712,362 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Watchguard, Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Feb 26, 2033 · High confidence

Filed Jul 27, 2009 as application 12/509,939 · Granted Apr 29, 2014
Base term plus 1310 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2009 2033
Clock starts
Jul 27, 2009
Term ends
Feb 26, 2033
Granted
Apr 29, 2014
base term patent term adjustment fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,310
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 1310 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Jul 27, 2009, when this application, 12/509,939, was filedJul 27, 2029High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1310 days, USPTO patent term adjustment recordFeb 26, 2033High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderFeb 26, 2033High confidence

This family

US 8,712,362this patent
Feb 2033
Feb 2033
US 9,326,062In force
Jan 2030
Jan 2030
US 9,516,398In force
Jul 2029
Jul 2029
US 10,009,701In force
Jul 2029
Jul 2029
The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Nov 19, 2009
Reel 23541, frame 23
Cuilia, AndrewEnforcement Video, LLCAssignment of Assignor's Interest
Dec 9, 2009
Reel 23629, frame 182
Cilia, AndrewEnforcement Video, LLCCorrective Assignment to Correct the Assignor's Name from "Andrew Cuilia" to "Andrew Cilia". Previously Recorded on Reel 023541 Frame 0023. Assignor(S) Hereby Confirms the Assignment of Assignor's Interest..
Mar 5, 2013
Reel 29924, frame 469
Enforcement Video, LLCTexas Capital Bank, National AssociationSecurity Agreement
Jan 30, 2017
Reel 41564, frame 706
Enforcement Video, LLC (a Texas Limited Liability Company)Texas Capital Bank (National Banking Association)Restated Intellectual Property Security Agreement
Nov 7, 2017
Reel 44712, frame 932
Enforcement Video, LLCWatchguard, Inc.Certificate of Conversion
Jul 12, 2019
Reel 49735, frame 91
Texas Capital Bank, National AssociationWatchguard, Inc.Release of Security Interest
Dec 17, 2019
Reel 51325, frame 261
Watchguard, Inc.; Watchguard Video, Inc.Motorola Solutions Inc.Change of Name
Feb 25, 2020
Reel 52536, frame 535
Watchguard, Inc.; Watchguard Video, Inc.Watchguard Video, Inc.Merger and Change of Name

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited